BIOLOGY (Methods for measuring population)

What is the primary purpose of direct observation in measuring populations?

• • To mark and recapture individuals

• • To estimate population density visually

• • To conduct aerial surveys

• To set up pitfall traps

Which method involves placing a line or path through a habitat to count the number of individuals that intersect with the line?

• • Quadrat sampling

• It simplifies ecosystem dynamics

• It improves agricultural productivity

• It contributes to ecosystem stability and resilience

In quadrat sampling, what is the purpose of placing a defined area (quadrat) in a habitat?

• • A) To capture elusive species

• • To conduct aerial surveys

• • To estimate population density

• • To mark and recapture individuals.

Which example demonstrates high species diversity?

• A monoculture farm with a single crop

• A grassland dominated by a few plant species

• A forest with a variety of tree, plant, and animal species

• A desert with limited vegetation and animal life

What is the fundamental concept behind mark and recapture methods?

• Direct observation of individuals

• • Counting individuals in quadrats

• • Estimating population density visually

• • Capturing, marking, releasing, and recapturing individuals

When there is higher biodiversity

• more organisms are likely to die because they can't adapt to environmental changes.

• there is less diversity.

• there is more diversity and higher sustainability of life.

• there is more diversity and lower sustainability of life

Which method involves capturing and marking individuals, releasing them back into the population, and then recapturing to estimate population size?

• Camera trapping

• • Transect sampling

• • Mark and recapture

What is the primary purpose of transect sampling in ecological studies?

• • Capturing aquatic organisms

• • Observing vocalizations of species

• cEstimating population density along a predetermined path

• • Setting up pitfall traps

an ecological hotspot is

• an area where temperatures reach at least 120 degrees F

• an area of very high biodiversity

• an area where almost no species can be found

• a species that is only found in one part of the world

How is transect sampling conducted?

• • Placing containers in the ground

• • Walking along a predetermined line and counting individuals or signs of their presence

• • Using motion-activated cameras

• • Burying marked individuals